Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

21. The Immune System

Introduction to Cells of the Immune System

Anatomy & Physiology

21. The Immune System

Introduction to Cells of the Immune System

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Multiple Choice

Which specialized leukocytes patrol the body searching for antigens that produce infections?

Macrophages

Basophils

Natural Killer Cells

Dendritic Cells

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Verified step by step guidance

Understand the role of leukocytes: Leukocytes, or white blood cells, are part of the immune system and help the body fight infections and other diseases.

Identify the function of each leukocyte type: Macrophages engulf and digest pathogens, basophils release histamine during allergic reactions, natural killer cells destroy infected or cancerous cells, and dendritic cells capture antigens and present them to T-cells.

Focus on antigen presentation: Dendritic cells are specialized in capturing antigens and presenting them to T-cells, initiating an adaptive immune response.

Recognize the patrolling function: Dendritic cells are known for their ability to patrol the body, searching for antigens to capture and present.

Conclude with the correct leukocyte: Based on their role in antigen presentation and patrolling, dendritic cells are the specialized leukocytes that search for antigens that produce infections.